Do taxes matter? Indentical products in the US and France feature French prices that are far more expensive, even when adjusting for currency. Milk, for example

Do taxes matter? Indentical products in the US and France feature French prices that are far more expensive, even when adjusting for currency. Milk, for example. iPhones. Clothing especially. Washing machines, furniture. Disposable income in France is vastly lower than that of the US. Is that inflation? Or tax policy?